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the flu season is coming. symptoms such as unexplained fever and diarrhea must not be taken lightly. it is recommended to get vaccinated in advance.

recently, a 5-year-old boy xiaokang appeared in foshan, guangdong.unexplained fever, diarrhea, cough and other symptoms,after self-medication,the disease still recurs.he was then taken to the hospital's pediatric intensive care unit.

after arriving at the hospital,xiaokang's condition progressed rapidly.he had convulsions and fell into a coma.

after an urgent etiological investigation, it was found that xiaokang was infected with influenza a. at the same time, his cranial mri examination results showed abnormal signals in the bilateral thalamus, bilateral cerebellar hemispheres and cerebellar vermis. after comprehensive analysis,consider acute necrotizing encephalopathy.

what is acute necrotizing encephalopathy?

acute necrotizing encephalopathy is a critical disease in children. it likes to attack the human central nervous system. the condition is dangerous, with a mortality rate of 30% to 50% and a very high disability rate. the first symptom is often high fever or hyperthermia.the prominent manifestation is convulsions and coma that occur rapidly after high fever.seizures usually occur 24 to 72 hours after fever, and some patients even suffer from impaired consciousness within 24 hours after fever. seizures usually occur after the first seizure.in severe cases, as the disease progresses, severe intracranial hypertension and brain herniation may quickly occur, leading to brain failure or even brain death.

fortunately, the doctor immediately performed "plasma exchange" on xiaokang. after half a month of comprehensive treatment, xiaokang's various inflammatory indicators dropped significantly.xiaokang is currently in good health and has been discharged from the hospital smoothly.

attending physician li jieyan told reporters,acute necrotizing encephalopathy is usually caused by a viral infection.most of them are influenza a viruses, as well as herpes viruses, enteroviruses, etc. xiaokang's condition develops so rapidly.it's caused by influenza a virus.

how to differentiate between flu and common cold symptoms?

both influenza and the common cold may cause upper respiratory tract symptoms, such as nasal congestion, runny nose, sneezing, coughing, and sore throat. they are contagious, butcompared with the common cold, influenza has more severe systemic symptoms, with the main symptoms being high fever, headache, sore throat, muscle aches, etc.

shanghai cdc:

the city has sufficient influenza vaccine reserves

the latest reminder from the "shanghai cdc" wechat official account: flu season vaccination has begun, and citizens can make appointments in a timely manner according to their needs.

influenza (abbreviated as "flu") is an acute respiratory infectious disease caused by influenza virus that poses a serious threat to human health. influenza vaccination is an effective means to prevent infection and reduce the burden of influenza-related severe illness and death.

the general population is susceptible to influenza viruses, and pregnant women, infants, the elderly and patients with chronic diseases are more vulnerable to influenza than other groups. the 2024-2025 influenza season is approaching, and it is recommended that people aged 6 months and above receive influenza vaccination in a timely manner.

shanghai started purchasing influenza vaccines in july, and the influenza vaccines for the 2024-2025 epidemic season have been supplied to various vaccination clinics. at present, the city has sufficient influenza vaccine reserves. citizens can make an appointment for influenza vaccination through shanghai health network, shanghai cdc wechat official account, etc.

however, some citizens still said that during the consultation and appointment process, they found that some community health service centers showed "insufficient supply". in response to this situation, the "shanghai cdc" also gave suggestions:

shanghai has suspended the use of sanofi influenza vaccine

recently, shenzhen sanofi pasteur biological products co., ltd. (hereinafter referred to as "sanofi") notified the municipal and district centers for disease control and prevention that the company has decided to voluntarily suspend the supply and use of influenza virus split vaccines for the 2024-2025 influenza season and initiate the product return procedure. so far, all vaccination units in shanghai have suspended the use of influenza vaccines produced by the company.

in addition, the shanghai cdc also responded to the situation that some citizens have already received sanofi's 2024-2025 influenza virus split vaccine:

experts from shanghai center for disease control and prevention:

it is recommended to get vaccinated before the flu season arrives.

it is understood that most community health service centers have already or are in the process of ordering influenza vaccines. at each vaccination clinic, the types of vaccines that can be booked are mainlyhualan influenza vaccine, zhonghui bio influenza vaccine, sinovac influenza vaccine, shanghai bio influenza vaccine, guoguang bio influenza vaccine, etc.

experts say that influenza usually breaks out in winter and spring, and often becomes prevalent at the end of each year or the beginning of the next year.it is recommended that you complete the vaccination before the flu season arrives.usually, protective antibodies are produced 2-4 weeks after influenza vaccination. the protective effect of influenza vaccine can last for 6-8 months.regardless of whether you received the flu vaccine last year, it is recommended to get vaccinated before the flu season arrives this year.

the shanghai municipal center for disease control and prevention also reminded that there is currently no research evidence for the use of most influenza vaccines in pregnant women in china, but there is no evidence that vaccination will have adverse effects on pregnancy and fetus.pregnant women should take the vaccine according to the doctor's advice and weigh the pros and cons. there are no contraindications to influenza vaccination for women who are planning to get pregnant.if pregnancy is discovered after vaccination, no special measures are required.